Gradient Boosted Tree is a powerful machine learning method that supports both classification and regression, and is widely used in fields requiring high-precision prediction, particularly for various types of tabular data sets. Owing to the recent increase in data size, the number of attributes, and the demand for frequent model updates, a fast and efficient training is required. FPGA is suitable for acceleration with power efficiency because it can realize a domain specific hardware architecture; however it is necessary to flexibly support many hyper-parameters to adapt to various dataset sizes, dataset properties, and system limitations such as memory capacity and logic capacity. We introduce a fully pipelined hardware implementation of Gradient Boosted Tree training and a design framework that enables a versatile hardware system description with high performance and flexibility to realize highly parameterized machine learning models. Experimental results show that our FPGA implementation achieves a 11-to 33-times faster performance and more than 300-times higher power efficiency than a state-of-the-art GPU accelerated software implementation.
This research wants to know; 1) an effect of 8 weeks HIIT on VO2Max of student as extracurricular participant futsal in Junior High School Budi Mulia Jakarta, 2) an increasing of VO2Max of student as extracurricular participant futsal in Junior High School Budi Mulia Jakarta through HIIT during 8 weeks. This research uses quasi experiment by research design of One-Group Pretest-Posttest. The researcher gives a treatment in the form of HIIT during 8 weeks in 3 times frequency per week. We measure VO2Max in initial and final of training by using Bleep Test to know the changing. The researcher uses SPSS 22 to analyse statistically the data obtained. The results showed an increase, that is the mean pre-test value is 28,9333 ml•kg-1•min-1 and after being given training, it increased to 31,4042 ml•kg-1•min-1 (8,54%). While the test uses paired t-test was obtained significant result as much 0,000, in other word p-value is < 0,05. Based on the results of the study indicated that there are differences VO2Max on student as extracurricular participant futsal in Junior High School Budi Mulia Jakarta after being given HIIT.
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